No, a 4-5 day spread is pretty normal and being really heavy doesn't matter that much. Your OK.
I dont think that really makes a difference, as long as you have your period you are able to get pregnant unless something else is wrong with you that enables you or makes it difficult for you to get pregnant
If it was heavy, then no, it's unlikely that you're pregnant
It is possible that you could be pregnant, take a test to know for sure
it should be. or the calf could "get stuck". the vulva will swell prior to giving birth unless the calf comes really early.
Yes
Could be implantation bleeding. If it is your actual period then it's unlikely that you are pregnant.
Yes, HCG is only in your body if you are pregnant, you could be either very early on, or you could be having a chemical pregnancy.
no it could be that your cycle decided to take a change due to hormones,stress,medication,etc.just because your monthly was early doesnt mean your pregnant
Yes. You could be testing too early.
If you had a period after you had sex, you're not pregnant. The uterus is shedding its lining, which, if you were pregnant, it would keep to nourish the embryo.
It is possible to be pregnant and still have you're period. However, having a period a week early or a week late isn't all that uncommon. If you're really unsure about it the best thing to do is just take a pregnancy test. That's the most reliable method.
Before I found out I was pregnant I had a really weird sensation in my stomach... the only way I could describe it was 'butterflies', however it was almost like a combination between a feeling of being really happy and really nervous all at once. It would come and go and it just felt different. I knew if I were pregnant it would be waaaay to early to feel anything but this odd sensation made me suspect pregnancy. Sure enough, I am now 10 weeks so yes, definately, 'butterflies' in the stomach can be an early symptom of pregnancy!