Condoms alone...or do you use BC too?

So I've never been on birth control. Lots of problems run in my family related to BC (blood clots and such). This has made me pretty leery about going on one. I'm a virgin and I'm seeing this guy I really like who is not. He says condoms are very safe but is very supportive and says thst if I'm nervous I could go on birth control to help relieve the anxiety about getting pregnant. Thoughts? Who here uses condoms as their sole form of BC?