I also agree with Iown MyLife. The woman is almost always held responsible for sexual "misconduct." I've even heard Dr. Laura (an American radio talk show host) blame the woman and talk as if the man bears no responsibility.
You guys need to slow down and decide what your priorities are. They have already laid a load of guilt on both of you, and now you have the burden of trying to overcome it.
If you choose to stay together, I recommend that both of you agree to pretend it never happened, and that no one laid that load of guilt on you. Being newly married can be stressful enough without third parties in the marriage telling you you're not doing the right thing. Ignore them.
Also pay special attention to what jgnat said. She is a non-JW married to a JW, but they have been successful in not allowing others to interfere in their private lives.
Best wishes.