Physical changes after sex

So me and my boyfriend have had sex about 10 times and my ejaculation used to be kind of clear and foggy and it used to not get everywhere but now it's like it's super thick and It happens every time we have sex now. It literally gets everywhere on him, me, and the bed. It looks sort of like lotion and i think it smells like cherios cereal or baby formula. I feel like the better he makes me feel and the more pleasure I have, the more I ejaculate. But I don't know what the cause of this is. And ever since the first time I had sex with him, I have had a little pooch on my lower tummy. And i just feel fat all the time.. Especially after I eat and get full ! I'm trying so hard to get rid of it but it will not go away for nothing unless I flex or tighten up or just suck it in ! Any tips to help ? My boobs have gotten a little bigger and my hips have too. I also was really moody after the first time. I'm not as bad now that sex is kind of a regular thing. I also feel like I have to pee a lot. My cramps are soo much worse now that I've had sex but it has regulated my period a little bit. I just wanna know all the changes your body goes through after having sex for the first time. I highly doubt I'm pregnant because we have used condoms everytime and they haven't broke cuz we check everytime. Does any one else body feel this way and look a little different ?