How can I get him harder

Grace
The last time we had sex he took a while to get harder and because he thought I was getting annoyed when I wasn't he quickly put the condom on but then he wasn't fully hard so after not long in having sex it wasn't working right I told him to take the condom off and we can do it with out he doesn't know it he manage to cum all of it outside or inside of me ahould I take a pregnancy test because I am  a week late from my period and it happened three weeks ago now ?????