You are 20 and still have plenty of time.

Don't be in a relationship that stresses you out.

Also, relationships aren't always equal like that. Some days we have to help our partner more. They might get sick, and a good partner would help. One might be in a financial struggle for some time and need help. Some days, we just have bad days and need someone to care. Sometimes you have to give a little more to the other, and some days they have to give a little more to you. I understand wanting to split things like bills, taking turns paying every date night, taking turns getting food, but it sounds like this is a little more than that.

Regardless, if the relationship is stressing you out, don't be in it. I think his actions and behavior is something to think about--what if you get sick? Would he bring you soup? Help nurse you? Or would he note, because he hasn't been sick yet and received that same treatment?

No you literally cannot get her pregnant from your penius touching her vagina. It doesn't work that way.

If the condoms are used perfectly then it's very unlikely to have gotten her pregnant.

Women's bodies aren't clockwork; sometimes we ovulate later in our cycles which causes our period to come later.

A test is accurate two weeks after sex and definitive after 3, so if it's been 14 days then she can test and trust it to be accurate.