Please help!!!

I have never been pregnant before. (I'm not sure if I am pregnant now, I'm still waiting) Currently I am doing so much research, downloading so much period apps, asking so many questions to women online. I had sex 1-2 days after my ovulation date (according to my period apps)(I have mainly been going off 2 days after ovulation) He never pulled out, he finished in me everytime (we had sex 4 times)

I have been feeling tired, I have been feeling these cramps that have been on and off in my stomach/abdomen area. My stomach feels heavy and my boobs feel weird. I don't know how to explain it. Usually the symptoms I feel before my period starts is my nipples are sore and on the day I start I cramp, but it's never been like this.

I have asked people if they had sex after ovulation and got pregnant, many said they have. My period is supposed to start 3-5 days. Most my apps say the 17th. I have been waiting and trying to find things to do other than waste pregnancy test.

This morning I felt sick and almost threw up (but I didnt because i had just woken up and swallowed it) and I'm 10DPO (I think)

So, here are some questions:

1. Has anyone ever gotten pregnant after ovulation?

2. When did you take a pregnancy test and got positive and you were actually pregnant?

3. What symptoms did you feel before you found out you were pregnant?

4. What symptoms did you feel week 1-2 of conception and implantation?

If you have time and have experienced the things I have or have any knowledge about any of this please help!

Thanks 🙏🏻