If sperm comes into contact with your vagina you can get pregnant - its impossible for anyone on the board to tell you whether this occurred during the incident that you described but the chances are low (but cant be ruled out).
Change in urine color is not pregnancy-related. It can be caused by many things. Most commonly, dehydration, diet (especially one high in vitamin B), or infection.
sorry i meant to say you could ovulate on day 15 if your current cycle is going to be 29 days.
first off at the beginning of your post you said it occured 7 days ago and then at the end you say it occured yesterday. if it was 7 days ago then you would have been on day 9 of your cycle and if it was yesterday you would have been on day 15.
women ovulate on the 14th day before the start of their NEXT period. if you have a 28 day cycle then you would ovulate on day 14. some people's cycles are irregular though, so for example you could ovulate on day 14 IF your current cycle is GOING TO BE 29 days.
whether or not you were ovulating at the time totally depends on your cycle. with that said even if you weren't ovulating sperm can live 5-7 days inside of you. so they could fertilize an egg that was released 7 days ago or they could fertilize one that was released 7 days later.
however, precum on your bf's hands is highly unlikely to get you pregnant. it's POSSIBLE but very, very unlikely.
most healthy couples trying to have a baby (having unprotected sex before during and after ovulation) have a 25% chance of getting pregnant each cycle. so you can imagine that your chances of pregnancy are extremely low.
also urine color does not indicate pregnancy and has to do with fluid in your body.
i suggest you get on birth control if you think you will be fooling around with your boyfriend again, just to be safe. or have him put on a condom when you plan to fool around.
but i don't think you're pregnant.