I know you have a very loving, understanding husband. Now stop this talk about him not loving you! You can't go camping if you're sick! He may pout for a little while (if you can't go), but he'll get over it. That doesn't mean he doesn't love you!!! Of course, he loves you.
Wait until he gets home, and have him take you to a walk-up medical clinic. If you get some medicine now, maybe you can still go. If not, stay home in bed, rest up, and have him invite a friend to go with him. You and he can go some other time together. There are plenty of other weekends you can go!