Well if you can find an attorney who can at least provide a free consultation, that would be extremely helpful. Be aware of how an attorney charges before hiring them; by hour and by contingency are very different payment plans.
Anyway, as to whether you can win, it would depend on who you want to sue and whether you can actually win. You could sue your boss directly for sexual harassment and you would stand a very good chance of winning, but the boss's own pocket might not be deep enough to get a decent award.
You could go after your former company, which would have more money, but proving that the company created a hostile work environment will depend on whether the company took the appropriate action against your former boss. This is debatable, and since I don't have all the facts, this will depend on how well your possible attorney can argue before a judge or jury.
Deciding whether to go forward is a personal decision, although if you want to, I urge you to do so sooner rather than later. Laws have built in time limits known as "statues of limitation" regarding how long after an injury a person can file a lawsuit. In other words, time is not a luxury if you wish to recover. Best of luck and please consult an attorney for legal advice, even if you decide not to bring suit.
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