Sex during pregnancy?

Neve
I'm a first time mom & I have a lot of questions. One of which is, should you have sex during pregnancy and if so, what are things to avoid? --Positions, kinks, etc. 
I am 12 weeks and I haven't had sex since I found out at 8/9 weeks. My hormones are driving me crazy and I feel like I'm literally going to go insane  if I don't have sex soon, so I'm asking y'all for advice/tips. Please help, lol!